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{No Model) B. MQKAY.

THILL GOUPLING..

No. 325,352. Patented Sept. 1. 1885.

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AXDREW RAIN liloKAY, OF VOODSTOCK, ONTARIO, CANADA.

THlLL-COUPLING.

SPECIFICATION forming part of Letters Patent No. 325,352, dated September 1, 1885.

(N0 model.)

To (0Z5 whom it 77mg concern:

Be itknown that I, ANDREW Barn McKay, a subject of the Queen of Great Britain, residing at \Voodstock, in the Province of Ontario and Dominion of Canada, have invented certain new and useful Improvements in Thill- Couplings; and I do hereby declare that the following is a full, clear, and exact description of the invent-ion, which will enable others skilled in the art to which it appertains to make and use the same.

Myinvcntion relates to thin-couplings; and it has for its object to provide a device of this character which shall combine simplicity of construction with effectiveness in operation, and one that shall be. cheap, strong, and durable.

The invention consists in the improved construction and combinations of parts, hereinafter fully described, and pointed out in the claim.

In the drawings, Figure 1 is a perspective view of a thill'coupling constructed in accordance with my invention. Fig. 2 is a longitudinal vertical section of the same. Fig. 3 is a perspective view of parts detached, showing the two sections and the thill-iron having the spherical head.

In the accompanying drawings, in which like letters of reference indicate corresponding parts in all the figures, A represents a sufficient portion of an axle to illustrate the application of my invention thereto. 13 represents a plate which has a seat, 0, upon its upper side for the reception of the nnder face of the axle.

represents an extension formed integral with the plate ll, and projecting lorwardly therefrom at one corner thereof. The said extension 0 is formed on its inner side with a seniispherical recess, b, to form a seat. slid extension 0 is also formed with an outwardly-extending ear or lug, 0, provided with a hole or opening.

Upon the under side of the plate B is pivoted a plate, D, as follows: The said plate I) is provided near its end with a hole or opening, and the plate B is provided with holes or openings. A clip, E, having scrcwthreaded ends, is fitted over the axle, its front arm passing through the forward opening of the plate and the opening of the plate D, thus pivoting said plates together. The rear of the clip passes through the other opening of the The.

plate B, and nuts (I are placed upon the threaded ends of the clip and tightened to position.

The plate D, like the plate B, is provided on its inner side with a semi-spherical recess, and is also provided with an ear or lug. e, having a hole or opening. llreprescnts the thill-iron, which consists of the plate F, hav ing a ball or spear at its end, said plate being also provided with holes or openings for the passage of screws or equivalent. fastening for its attachment to the carriage-thill.

The inner faces of the sections composing the draw-iron are provided with recesses f, thus forming shoulders v The operation is as follows: The sections are bolted together in the manner described and the ball or sphere on the end of the thilliron placed between the sect-ions. The said sections are then secured together by a bolt passing-through the openings of the ears or lugs. It will be seen that when said sections are-brought together the recesses f will form a slot to allow the vertical movement of the thill-iron,a11d thatsuch vertical movement will be limited, further than the shoulders g, which form the end of the slot, and that the shoulders adjacent to the ears or lugs will limit the downward movement.

A thillcoupling constructed as above described is extremely simple, may be manufactured at a slight cost, is effective in its operation, and strong and durable.

I claim as my invention and desire to secure by Letters. Patent The herein-described improved thill-coupling, comprising the main section secured to the under side of the axle, and having the integral extension (J, the section comprising the plate 1), pivoted to the under side of the plate B, lugs at the forward ends of the sections, a bolt passing through said lugs, said. sections having the semicircular recesses on their inner sides, the recesses f, forming the shoulders g, in combination with. the thilliron having the spherical head, substantially as set forth.

In testimony whereof I aliix my signature in presence of two witnesses.

AXDREW BAIX MCKAY.

"iiitnesses:

HENRY J. FINKLE, S. E. lllCKAY. 

